In a hypothetical scenario dubbed ‘Shakeout’, a team of experts on Thursday described the effects of a 7.8 magnitude quake similar to the one that hit China on May 12, which killed more than 50,000.

The scenario has the quake located on the famous San Andreas fault that runs through the country's most populous state, with the epicenter in Southern California.

"This is not a worst case scenario, it's merely a credible scenario," David Applegate of the US Geological Survey told lawmakers at a hearing in Congress.

The scripted exercise has the quake hitting at about 10:00 am on November 13, 2008. In the minutes that follow, 10 million people feel the ground shake. In downtown Los Angeles, strong shaking lasts for 55 seconds.

Despite the high number of people exposed to the earthquake's power, safety precautions contain the death toll directly attributed to the trembler, with an estimated 1,800 killed.

All un-reinforced buildings made of masonry within 15 miles of the fault are totally destroyed. More than 600,000 buildings suffer some type of damage, leaving thousands without homes or jobs.